update pot & ko.po file.

Summary:
Portable Object Template and ko.po update.
(some fix - options_keys.c)

Reviewers: seoz, huchi, billiob

Reviewed By: billiob

Subscribers: ryuan.choi, billiob, seoz, DarkCircle

Differential Revision: https://phab.enlightenment.org/D1377
update po's
store keybindings in a hash map
have all the default shortcuts in the hash map
update documentation on key shortcuts
load key bindings from config
add ui to configure key bindings
group actions to improve the configuration screen
update po